Ok just to update this. Car went back to Dealer with the passenger side rattle back (returned with the hot weather we had hence the long wait for a solution
) So turns out there was a rattle coming from A pillar and two rattles from the door card. They also had to tighten the boot lock as that was loose/rattling as well.
So all sorted for now
They also kinly carried out my oil service when the car was on 4500km's early
so saves me having to go near a dealer till December when the brake fluid is due for changing.
Only downside is they want €250
per tyre to replace the two backs. Can get Bridgestone Potenza RE 050 A tyres from local tyre place for €170 inc fitting etc